id:A094628 - OEIS Search Results

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Sequence whose n-th term digits sum to 4.

+0
2

4, 13, 40, 130, 400, 1300, 4000, 13000, 40000, 130000, 400000, 1300000, 4000000, 13000000, 40000000, 130000000, 400000000, 1300000000, 4000000000, 13000000000, 40000000000, 130000000000, 400000000000, 1300000000000 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`G.f. : (4+13x-9x^2)/(1-10x^2); a(n)=10^(n/2)(13sqrt(10)/20+2-(13sqrt(10)/20-2)(-1)^n).`
	CROSSREFS	`Cf. A094629.` `Sequence in context: A003462 A091141 A098183 this_sequence A034742 A097112 A077284` `Adjacent sequences: A094625 A094626 A094627 this_sequence A094629 A094630 A094631`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 15 2004`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research